Supplemental Instruction
Iowa State University
Leader: Adam
Course: Biology 211
Instructor: Dr. Wilsey
Date:
1. Two alleles that both affect the phenotype in separate distinguishable ways is known as?
a. Complete dominance
b. Codominance
c. Incomplete dominance
d. Partial dominance
2. Incorporation of genetic material from another organism without being the offspring of
that organism is referred to as what?
a. Vertical evolution
b. Horizontal evolution
c. Diagonal evolution
3. Which describes Maternal effect?
a. The phenotype of the mother determines the genotype of the offspring.
b. The genotype of the mother determines the phenotype of all the offspring.
c. The genotype of the mother produces offspring of the same genotype as the
father.
d. The genotype of the sons is only dependent on the mother’s phenotype.
4. Who hypothesized that species evolve through use and disuse and through the inheritance
of acquired traits.
a. Charles Darwin
b. Carolus Linnaeus
c. Jean-Baptiste de Lamark
d. Alfred Wallace
5. A Barr body will be found in the nucleus of _______.
a. Male gamete
b. Female gamete
c. Male somatic cell
d. Female somatic cell
6. Fathers pass sex-linked alleles to all of their ________, but to none of their ________.
a. Sons, daughters
b. Daughters, sons
7. What is the smallest unit that can evolve?
a. Individual
b. Population
c. Species
8. The phenotype of F1 hybrids is somewhere between the phenotype of the two parental
varieties is called?
a. Complete dominance
b. Codominance
c. Incomplete dominance
d. Partial dominance
9. All of the alleles for every gene in a given population is called a ______?
a. Species
b. Gene Pool
c. Locus
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d. Hybrid Zone
10. Which person viewed life as descent with modification?
a. Charles Darwin
b. Carolus Linnaeus
c. Georges Cuvier
d. Alfred Wallace
11. The alleles of one gene mask the expression of the alleles of another gene is known as?
a. Incomplete dominance
b. Epistasis
c. X inactivation
d. Translocation
12. A plant that has the genotype AaBbcc _______.
a. is triploid
b. is homozygous at two loci
c. is heterozygous at two loci
d. had dominant alleles at three loci
13. Independent assortment of chromosomes is a result of ________.
a. the random nature of the fertilization of the egg by a sperm cell
b. the relatively small degree of homology shared by the x and y chromosome
c. the random distribution of the sister chromatids to the two daughter cells during
anaphase II
d. The random and independent way in which each pair of homologous chromosomes
line up at the metaphase plate during meiosis I.
14. Which of the following terms best describes when the phenotype of the heterozygote
differs from the phenotype of both homozygotes?
a. Epistasis
b. pleiotrophy
c. multiple alleles
d. incomplete dominance.
15. A couple who are both carriers for the gene for cystic fibrosis have two children who
have cystic fibrosis. What is the probability that their next child will be a carrier for this
recessive genetic disorder.
a. 0%
b. 25%
c. 50%
d. 100%
16. An allele is _______.
a. a type of chromosome
b. the recessive form of a gene
c. the dominant form of a gene
d. an alternative version of a gene.
`17. Which organelle demonstrate cytoplasmic inheritance
a. Golgi apparatus
b. Cholorplast
c. smooth endoplasmic reticulum
d. nucleus
18. The phenotypic ratio of a monohybrid cross is
a. 9:3:3:1
b. 9:3:4
c. 1:2:1
d. 3:1